# signal-cli
signal-cli is a commandline interface for [libsignal-service-java](https://github.com/WhisperSystems/libsignal-service-java). It supports registering, verifying, sending and receiving messages.
-To be able to link to an existing Signal-Android/signal-cli instance, signal-cli uses a [patched libsignal-service-java](https://github.com/AsamK/libsignal-service-java), because libsignal-service-java does not yet support [provisioning as a slave device](https://github.com/WhisperSystems/libsignal-service-java/pull/21).
+To be able to link to an existing Signal-Android/signal-cli instance, signal-cli uses a [patched libsignal-service-java](https://github.com/AsamK/libsignal-service-java), because libsignal-service-java does not yet support [provisioning as a linked device](https://github.com/WhisperSystems/libsignal-service-java/pull/21).
For registering you need a phone number where you can receive SMS or incoming calls.
signal-cli is primarily intended to be used on servers to notify admins of important events. For this use-case, it has a dbus interface ([man page](https://github.com/AsamK/signal-cli/blob/master/man/signal-cli-dbus.5.adoc)), that can be used to send messages from any programming language that has dbus bindings.
+It also has a JSON-RPC based interface, see the [documentation](https://github.com/AsamK/signal-cli/wiki/JSON-RPC-service) for more information.
## Installation
You can [build signal-cli](#building) yourself, or use the [provided binary files](https://github.com/AsamK/signal-cli/releases/latest), which should work on Linux, macOS and Windows. For Arch Linux there is also a [package in AUR](https://aur.archlinux.org/packages/signal-cli/) and there is a [FreeBSD port](https://www.freshports.org/net-im/signal-cli) available as well.
System requirements:
-- at least Java Runtime Environment (JRE) 11
+- at least Java Runtime Environment (JRE) 17
- native libraries: libzkgroup, libsignal-client
Those are bundled for x86_64 Linux (with recent enough glibc, see #643), for other systems/architectures see: [Provide native lib for libsignal](https://github.com/AsamK/signal-cli/wiki/Provide-native-lib-for-libsignal)
./gradlew build
-3. Create shell wrapper in *build/install/signal-cli/bin*:
+ 2a. Create shell wrapper in *build/install/signal-cli/bin*:
./gradlew installDist
-4. Create tar file in *build/distributions*:
+ 2b. Create tar file in *build/distributions*:
./gradlew distTar
+ 2c. Create a fat tar file in *build/libs/signal-cli-fat*:
+
+ ./gradlew fatJar
+
+ 2d. Compile and run signal-cli:
+
+ ./gradlew run --args="--help"
+
### Building a native binary with GraalVM (EXPERIMENTAL)
It is possible to build a native binary with [GraalVM](https://www.graalvm.org).
2. [Install prerequisites](https://www.graalvm.org/reference-manual/native-image/#prerequisites)
3. Execute Gradle:
- ./gradlew assembleNativeImage
+ ./gradlew nativeCompile
- The binary is available at *build/native-image/signal-cli*
+ The binary is available at *build/native/nativeCompile/signal-cli*
## FAQ and Troubleshooting
For frequently asked questions and issues have a look at the [wiki](https://github.com/AsamK/signal-cli/wiki/FAQ)